fccdb

Gives you programmatic access to the FCC's Universal Licensing System and Antenna Structure Registration database. You can look up radio licenses by callsign or location, query antenna tower registrations, and generate microwave path elevation profiles between coordinates. Reach for this when you're building RF planning tools, checking spectrum usage in an area, verifying tower heights and locations, or analyzing line-of-sight paths for point-to-point links. It's the FCC's public data made queryable without dealing with their various web interfaces directly.